Tag Archives: viability

Cardiac Nuclear Imaging
4
Feb

Overview

Cardiac nuclear imaging evaluates myocardial perfusion metabolism and viability. SPECT and PET are common modalities for ischemia and viability assessment. These studies inform revascularization and medical therapy decisions.

Perfusion Imaging

Myocardial perfusion imaging detects ischemia and infarction. Stress and rest protocols assess reversible perfusion defects. Quantitative measures support risk stratification.

Metabolic and Viability

FDG PET assesses myocardial metabolism and viability in hibernating myocardium. Viability imaging guides revascularization decisions in selected patients. Integration with anatomical imaging improves localization.

Practical Considerations

Patient preparation and tracer selection affect study quality. Attenuation correction and gating improve diagnostic accuracy. Collaboration with cardiology optimizes clinical impact.

Cardiac MRI CMR
4
Feb

Overview

CMR provides comprehensive assessment of cardiac morphology ventricular function myocardial viability perfusion and tissue characterization without ionizing radiation.

Technique

Cine imaging late gadolinium enhancement T1 and T2 mapping and perfusion sequences address different clinical questions.

Clinical Uses

Cardiomyopathy evaluation myocarditis viability assessment congenital heart disease and valvular assessment.

Limitations and Safety

Longer exam times and contraindications for some implants. Gadolinium use requires renal function assessment.